Valve for explosive engines



I May 15, 1923.

K. E. KELLER VALVE` FOR EXPLOSIVE ENGINES /Fild Oct.

2 Sheets-Sheet 2 /r/ fr Patented May l5, 1923i.

i y KENT 1I KELLER, vor Ava, ILLINoIs.

v aLvn FoanXrLosIvn ENGINES.

Application 'area october si, 191?. serial N6. 199,431. i

plosive Engines, and do hereby declare that the following is a full, clear, and exact description thereof,

My invention relates to explosive engine valves and has for its object-to'provide an elficient, and economical valve mechanism Ipreferably of the conical rotary type,

A further object of my invention is to provide in a` valve controlling aplurality of cylinders, a plurality of ports the angular width (number of 'degrees of arc of cirrle) and the area of Which shall be equal, ir-

respective of the diameter of the part of the conical lvalve in Ivliicheach valve port is placed. l

A further objectl of my invention is to shape the valve ports so as vto reduce -materially the explosive noises.

A further object of my invention is to strengthen the valve across the ports.

A further object of my invention is to provide means by which worn'parts may be replaced economically, quickly, and accurately.

A further object of my invention is to provide means so that the operation of the valve will remove foreign substances from the valve bore, will facilitate oiling,"and Will provide a graphite lubricant.

Other and further objects of my invention will be apparent from the following description of one embodiment of my invention, in which V i Figure 1 is a longitudinal. section through approximately the center of the engine;

vFigure 2 a section at right angles to yFigure 14 through the center of a cylinder;

"Figure 3 an enlarged longitudinal section of a portion of the bore sleeve; *Figure `4I! a section partlvin elevation of a valve 'provided 'with watercooling attachment;

Figure is an enlarged longitudinal section of a portion of the bore,'bore sleeve,

and valve, but showing the opposite side' from that shown in Figure 1; and

Figure 6 an end vievv'of the valve shoW- ing the ports in dotted lines.

Similar reference characters refer to similar parts throughout the drawinga Referring tof'tlre lembofdin'ient of theinvention illustratedv in the drawings, an eX- plosive engine is represented having siX cylinders, 1, 2, 3,4,15,and6, with pistons 11, 12,13, 1e, .15, and 16, respectively. f The intake is controlled by 'a rotary conical valve i (Figure 2) 'and the 'exhaust byar'otary.

conical valve 8. AEach valve is provided 21, 22, 23, 24,25, and 26 respectively,

'with ports, one for eachcylinder, numbered The sequence of cylinder operation may be'as desired, the embodimentk chosenfor purposes of illustration providing for cyll Inder operation-inthel following order, 1, 4c, l

rl'he angular Width (number of ydegrees of arc'of circle) of each port in the valve is the saine, but the lengtn'of eachfportyvaries from the greatestilengtliin the port' at I the vsmallest diameter of the valve,itofthe shortest length inthev` port at the greatest diameter of the valve',v so"that 'preferably the area of eachport Vina valve is' the same.

By having-'the angular 'Width (numberfof u degrees of arc ofcircle) the same'infeach port, the time duringvv'hich each port is formity of operation. y i v Each valve fits Within a'correspondingly tapering bore 30, having ports 31,32, 33, 34, 35 and 36,- lf desired, a sleeve 40 having ports 1-1, 42, 13, 4&1, 45 and 4.6 may be vfitted Within the bore lto provide a Wearing'surface which may be renewed vvas occasion demands. In orderl that the sleevefmay ybe placed in the bore only in such positionthatits ,ports shall correspond withv ythe proper cylinder ports, slots 37 ofvarying size maybe pro-` vided on the bore, in which correspondingly sized lugs or projections 47 on the sleeve are adapted to lit.

open will be the same, thusfacilitating uni-V The ports' in lthe .-valve preferably are ioo ln order to eliminate explosive noises, the approaching bottom edge of each port in tho exhaust valve may be formed so that from the vertical edge of the valve near the larger end or' the bore the bottom or approaching edge of the port runs straight as at 28 'for approximately half the distance and then curves upwardly as at 29 With a slight outward curve. rlfhus, the first opening to the cylinder port will be slight, the opening gradually increasing unt-il a proper portion of the length ot the opening has been uncovered, when the full opening becomes available -for exhaust discharge.

Opposite each port in the exhaust valve an extra metal lining may be sprung to protect the valve from the hot gases. This lining may form part orp protective inner lining of asbestos, mineral vvool, or other nonconductor1 Sl held in place by an inner metal sheet 82. The Walls of the valve likewise may be hello7 for the introduction ot Water which Will be forced from an entrance 83 to an exit 8a by spiral blades 85 therein (Figure 4c). y t

0n each sleeve is provided a series oli spiral grooves turned or twisted about one and a half turns to the valve and spaced substantially equally apart. @ne groove 50 is cut with a 90o angle against the direction of rotation of the valvey and With a gradual slope in the other direction, so that the rotation of the valve will tend to carry foreign substances out of the sleeve on the rear thereof. The second spiral groove 5l is cut with its 90" angleivith the direction of rotation or the valve and With a gradual slope in the opposite direction so that the rotation of the valve will tend to carry oil throughout the bore. The third groove 52 is adapted to hefilled With graphite or any desired solid lubricant. The grooves are so arranged as not to extend along any portion of the valve Where they vvill be hit by the exhaust gases coming 'from the cylinder.

Many modifications will be apparent to those skilled lin the art, my invention not being limited to the specic embodiment chosen for purposes of illustration.

I claiml 1. In an explosive engine, series of cylinders, pistons therein, an inlet port for each cylinder, an exhaust port 'for each cylinder, and means to control the opening from said exhaust ports comprising a conical exhaust valve having ports of the saine angular Width and area for each cylinder.

2. In an explosive engine, a series o'l cylinders, pistons therein, an inlet port for each cylinder, an exhaust port for each cylinder. and means to control the opening 'from said exhaust ports comprising a conical exhaust valve having ports varying in length but of the saine area.

3. ln an explosive engine, a series of cylinders, pistons therein, an inlet port for eac-h cylinder, an exhaust port for each cylinder, and means to control the' opening from said exhaust ports comprising a rotary exhaust valve, a bore, and a sleeve adapted to it Within said bore having` a spiral groove cut with a 900 angle against the direction of rotation o'li the valve and with a gradual slope in the other direction.

LIL. ln an explosive engine, a series or' cylinders, pistons therein, an inlet port for each cylinder, an exhaust port for each cylinder, and means to control the opening from said exhaust ports comprising a rotary exhaust valve, a bore, and sleeve adapted to it- Within said bore having` a spiral groove ycut with a 900 angle with the direction`ol rota` tion ot thev valve and with a gradual slope in the other'direction.

5. ln an explosive engine, a series ot cylinders, aistons therein, an inlet port Ylier each cylinder, an exhaust port for each cylinder, and means to control the opening into said inlet ports comprising a conical inlet valve having ports of the same angular Width and area for each cylinder.

6. ln an explosive engine, a series of cylinders, pistons therein, an inlet port for each cylinder, an exhaust port for each cylinder, and means to control the opening into said inlet ports comprising a conical inlet valve having ports varying in length but ot the same area.

7. ln an explosive engine, a series of cylinders, pistonstherein, an inlet port 'for each cylinder, an exhaust port for each cylinder, and means to control the opening into said inlet ports comprising a rotary inlet valve, a bore, and a sleeve adapted to it Within said bore having a spiral groove cut With a 90 angle against the direction of rotation of the valve and with a gradual slope in the other direction. i i

8. In an explosive engine, a series of cylinders, pistons therein, an inlet port for each cylinder, an exhaust port for each cylinder, and means to control the opening into said inlet ports comprising` a rotary u inlet valve, a bore, and a sleeve adapted to `tit Within said bore having a spiral groove cut with a 90 angle with the direction of rotation of the valve and With a gradual slope in the other direction.

In testimony that I claim the foregoing I have hereunto set my hand.r i

KENT E. KELLER. l/Vitnesses:

E. A. BROWN, R. WTALWARK, Jr. 

